Wikipedia
Langspil
The Langspil is a traditional Icelandic drone zither. Since old folk music has been gaining more popularity in recent years, more and more people are able to play this instrument. And since it only has 1 melody string with 1 to 5 drone strings (usually 2) it is easy to learn to play it compared with more complicated instruments.
The langspil can be played by plucking the strings by hand, with a bow or by hammering. Langspils exist in two basic versions, straight and curved and are generally around the length of 80 cm, but can be as long as 104 cm or as short as 73 cm. Many different types of wood have traditionally been used, including pine, fir, beechwood, birch, oak and walnut, since they were generally constructed from driftwood.